Across
- 3. Named after a state with the capital being Nashville
- 4. 5 cent coin
- 6. Periodic symbol is K
- 8. One of the Avengers
- 13. Cleans teeth
- 14. We use this to make balloons float
- 15. Is superman's only weakness
- 16. Makes food salty
- 18. Periodic number is 1
- 19. Periodic symbol is Al
Down
- 1. Lights up signs
- 2. Named after a famous genius
- 5. Named after a state with the capital being Sacramento
- 7. We use this to make jewelry
- 9. A planet
- 10. We put in pools
- 11. Worth a lot of money
- 12. Named after a continent
- 17. We breath this in